Shuttle-thrower.



V. BAGHMAN.

SHUTTLE THROWER.

APPLICATION FILED JAN. 25, 190e.

Patented May-18, 1909.

Valen iai/wz@ @dem ewa,

lVALENTINE BACHMAN, vor, INDIANAPOLIS, INDIANA.

SHUTTLE-ennemis.

Specification of Letters Patent.

Patented May 18, 1909.

v,ippiiaami sied-January 26,1908. Vserial No. 412,528.l

To all whom 'it may concern:

Be it known that I VALENTINE BACHMAN, a citizen of thellnited States, residing at Indianapolis,in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Shuttle-Throwers, 'of which the -following is a specification. The object of my invention is to' roduce an apparatus for attachment to the athe of a loom lfor automatically vthrowing` the shuttle, the construction being such that the apparatus may bereadily adJusted' to throw thev shuttle any desired distance 'and to properlyvcushion the shuttle at the end of ,its movement.=

The accompanying drawings illustrate my invention.

l Figure 1 is a diagrammatic view of a loom .showing my apparatus in place; Fig. il-.an axial section of one of the devices, two

of such devices beingused on eachloom;

Fig.` 3 a section on line 3 3 of Fig. 2, and Fig; 4 a `.detail of the .pressure -reducing valve, Fig. 5 isla modification. In the drawings, 10- indicates the mai frame of the loom and 11 the lathe provided with `the usual lshuttle race 12. Mounted vat 'each end of the shuttle race is one of my improved throwing devices, each of Which I-fcoinpr-isesa main cylinder 13 having a pis- Vton 14 mounted therein.

The rod 15 of piston 14; passes through a packing gland 1G 'and 'is provided at its outer end with a head 17 adapted to engage the shuttle 18, (shown in dotted lines in Fig. 2). Leading into the outer end of cylinder 13 is a supply passage 1,9 communicating through chamber 13 .with

a supply pipe 21 which leads from a suitable source of compressed air or other m'otive fiuid. Arranged between passage 19. and chamber 20, is a valve scat 22 in which is seated an'oiitwardly opening valve 23,

said valve being provided with a stem 24 extending into the exhaust valve 25. alve 23 is supported in the casin by a usual spider shank 23 and 1s norma ly closed by the pressure in chambei' V20.- Valve 25 fits snugly yin the casing 13.', which may beconveniently formed integral with cylinder 13, and'is capable of 'an "arial movement therein. Valve 25 at its innerend lis closed except for some cornparatively small exhaust passages26, which form a communication between passage 19 and theexhaust .openings 27 which, in the path of movement of an normal position of the valve lieoutside of the casing 13 so `vas to forni a restricted passage between the atmosphere and thc power endl of cylinder 13. Arranged substam tially parallel With the axis of valve 25 is longitudinally-inovable yoperating rod 30 l supported at one end in an opening 31 which permits slight swinging of the rod and at the other end supported in a bracket 32-having a spring 33 which normally holds the adjacent end of the rod at one eXtreme of its possible swing. Rod 30 carries a -nger 34 adapted to engagethe outer end of the valve 25. y

lAdjacent bracket 32 I mount a swinging' segment 35 provided with a straight face 36 and ay camface 37, saidcam face being nearer the Ycenteroi oscillation of the segment than the straight face 36, and being flanked, by a guard flange 38. In order to operate segment I rovde it with a.tinger 39 adapted to be rought into engagement. with a stop I10, on frame 10, by the return movement of the lathe 11.' The end of rod 30 normally engages the portion 36 of segment 35 and in that.v position reciprocation' of the segment has no eHect upon the rod. In order to throw the rod 30 into alineinent with the cani 37 of segment 35 I arrange, iii lthe path of movement of the shuttle, a finger 452 which carries a light spring 46, the arrangement being such that., when the shuttle passes into engagement with arin 45, spring 46 thereof will serve to throw rod 30, against the action of siring 33, into alinemcnt with the cani 37 o segment 35.

The operation o the device thus. far de-A scribed is as follows. l/Vith the parts in the positions shown 1n Fig. 2, reciprocation oi the lathe in the usual manner will cause tinfgger 39 to engage stop 40 so as to reciprocate .segment 35 but this reciprocation will have no effect on rod 30 until a shuttle passes into '-uigzigcnient with arm 45, whereupon said the inner end of valve 25cainto engagement "pressure within chamber .SO-in 1n communication said valve outward until .shuttle is again delivere 'end with means 55 by which it may be readthe shuttle will be'causec' to traverse its trat-l; and be delivered to the coperating' throwing mechanism Wit-h just tin right amount of force.

Where the material carried by the shuttle is quite heavy, the weight of the loaded shuttle lessons quite rapidly and less force is required at each throw to pro el it across the lat-he. It desirable there ore that means be provided forv automatically successively decreasing the tl'ective throwing force as the `shuttle lghtensnnd for this pur ose I have made that portion of the cham r 5G which is in com ,tmication with cylinder 13 automatically colapsible in the following manner. Threaded on rod 53 is a gear 60 which meshes with gear 6l provided with thus permitting 2O through the with the stem 24 of valv'e23, pressure tcpass from chamber passage 19 into the outer end to cylin er 13 so as to drive piston 14 to the right and thus cause head 17 4of rod 15 to engage the shuttle' 18 and throw the same across the loom along the track 12. If the right hand end of cylinder 13 be tight the power movement of the piston 14 will continue until the pressure in the two ends of the cylinder balance and when this occurs the pressure in the passage 19 acting upon the innerend of valve 25, will blow orts 27 are uncovriving rod 30 to lts ered (this movement also normal position) whereupon the pressure in the left hand end of cylinder 13 may escape through ports 26 and 27 and the pressure within the right hand end of cylinder 13 will operate to move the piston 14 a portion of the way back to normal osition. When the dto the 'mechanism by corresponding mechanism on the 'other side ot' the lathe, it will engage head 17 and drive piston 14 to the position shown in Fig. 2 but the air within the left hand end ot piston' 13 will serve as a cushion to thisblow owing to the restricted character of the ports 26 and 27.

As previously stated, the amount of movement of piston 14 to the right will de end upon the com )ression within the right tand end of the cy inder, and in order that this i may be adjustable I provide a reservoir 50 which communicates with the right-hand end o1 cylinderfl through a passage 51. In the reservoir 5U l mount a piston 52 having a 1:.od53` threaded and provided at its outer 63 carried by a lever 64. connected by link 65 with a lever 66 arranged to be operated by piston rod 15 or shuttle to drive said lever inv one direction, the arrangement being such that piston 52 is automatically advanced step-by-step in cylinder 50 so as to ensmall that portion of the cylinder which is in coxnmunicrtion with cylinder 13 and thus, by decreasin the volume, or capacit of that portion otgchan'iber 50, successively;r increase the resistance againstlthe forward or shuttle-throwing movement of rod 15. It

ing force remains the .ame the resistance to such force is successively increased as the. shuttle is successively lightened so that the effective throwing force upon the `shuttle bears a substantial constant ratio to the weight or load of the shuttle.

' In Fig. 5 I show a construction in which the shuttle is cushioned in its return by the automatic resistance increaser. In this form piston 52 has a rod 53 having ratchet teeth 53. Lever 64 carries a pawl 63 adapted to engage teeth 53 and lever 64 is connected by link 65 with lever 66. A pawl 67 ris provided to hold the piston 52 in its adily adjusted longitudinally so as to shift iston 52 within chamber 50 and alter its si es. Communicating with the active end of chamber 50 is a pressure-reducing valve 56 which is also connected by a pipe 57 with pipe 21, the arrangement being` such that any desired normal pressure may be maintained in reservoir 50 and the right-hand end of cylinder 13, said pressure being simply sufficient t'o move the piston 14 back far enough so that a roper cushioning effect for the returning sliuttle may be had. With a given the right a given operatthe righthand end (Fig. 2) of cylinder 50. I claim as my invention: 1. In a. shuttle thrower, thecombination with the main havin a piston rod for engagin the shuttle, o a valve for controlling al mission of motive fluid, a separate exhaust .valve for said cylinder, and means acting on one of said valves for closing the exhaust valve and opening the admission valve. 2. In a shuttle thrower, the-combination with the main cylinder and a piston therein havin a piston rod for engaging the shuttle, o 'a valve for-controlling admission of motive f'luid -to one end of the cylinder, an

hand end of` cylinder 15 and ing` pressure in the left hand end of cy nder 13, the amount of throw of the piston 14, upon o )ening of valve 23, will be dependent upon t e sizc of that portion of chamberO with the right hand end of cylinder 13, z'. e., the greater the active volume of chamber 50, the greater the throw of piston 14 before the pressures upon opposite sides of said piston can be equahzed, the consequence being that by an adjustment of piston the throw of piston 14 can be nicely adjusted to accommodate a shuttle ofv any weight through any desired distance, so that mission valve, and means controlled bythe movement of the shuttle for closing-the exhaust valve-and openingV the admission valve.

a ratchet 62. Engaging ratchet 62 is a pawl will be seen therefore that, whilethe throwvanced positions against the air pressure in cylinder andpiston thereinv exhaust valvecperatively engaging the ad-.

3. In( a shuttle throvverL the combination ot the main` cylinder and piston therein having a piston rod adapted to engage the sluittle, of an admission valve for controlling the entrance of motive fluid to one end of the cylinder, an exhaust valve having an eX- haust passage adapted to eng-age the admission valve to open the same, and means for shifting the exhaust valve to close the exhaust and open the admission valve.

'4. In a shuttle thrower, the combination ot' the lnain cylinder and piston therein having a piston rod adapted toengage a sluittle, of an admission valve :tor controlling the entrance of motive Huid to one end of thecylimler` an exhaust valve., having a re stricted exhaust passage, adapted to engage the admission lalve to open tliffsame, and means controlled by the movementof the shuttle for shifting the exhaust valve to Lfclose the exhaust and open the admission "valve In a shuttle thrower, the combi-nation with the main cylinder and piston therein having a piston rod adapted to engage a shuttle, of means for"admittinmotive Huid to one end of said cylinder, andmeans tor varying the effective resistance capacity of the Substantially-tight opposite end of the cylinder. t,

G. In a. shuttle thrower, the combiliation with the main cylinder and piston therein having' a piston rod adapted to engage a shuttle. of means for admitting motive fiuid to one end ofl said cylinder, and means tor maintaining a desired'normal pressure within thc opposite end of the cylinder with-the piston in the main cylinder at the beginning of its throwing stroke. i

l'. In a shuttle thrower, the combination with the main cylinder and piston therein having a piston rod adapted to engage a shuttle` ot means tor admitting motive fluid to one end of said cylinder. means` for varying the ett'ective resistance volume ot' the suhstantially-tight opposite end ot' the cylinder, and means Vfor maintainingr a desired normal pressure within said opposite end ot' the cylinder with the piston in the umili c vlinder at the beginning ot' its throwing stroke. i

ln a .shuttle thrower` the combination with a main cylinder having' a piston mounted therein and havin;r a piston rod adapted to engage a shuttle. ot' means lor admitting a motive luid to one end ot' said cylinder, a chamber communicating with the opposite end ot' said c vlinder and a piston adjustably mounted in said chamber \\.herehy the ett'ective volume ot said opposite end ot the .main cylinder mav be varied.

E). ln a shuttle throwerf the combination with a main cylinder having a piston mounted therein and having` a piston rod adapted to engage a shuttle. incanl`oi admittingA a f'motive fluid to one end of said cylinder. a chamber communicatinnr with the opposite etti-,of said tjvlinder and a piston adjustably m )tinted in said chamber whereby the etfectlive volume of said opposite end of the main cylinder may be varied, and means for maintaining' the desired pressure' in said opposite end ot the cylinder and chamber when the parts are in normal position. i

1t). In a, shuttle thrower, the combination with the 'throwing mechanism comprising a throwing member and an admission valve to admit motive fluid thereto, of a valve shifting member adapted to shift said admission valve, an operating cam for operating said- 'shiftingr' member, means t'or normally holding' said shitting member and cam in inactive relation, a race-way for the shuttle, a member arranged in' the path of the moving shuttle to bring'the shifting member and cam into operative relation, and means for operating said cam. i

.l 1l. In a shuttle thrower, the combination with the main cylinder and piston therein havingr a piston rod adapted to engage a shuttle, ot' means for admitting motive fluid automatically successively diminishing the effective lvolume of the substantially-tight. opposite end of the cylinder.

1Q. In a shuttle thrower, the combination with the main cylinder and piston therein having a piston rod for engaging the shuttle. of means for admitting motive fluid to one end ot said cylinder, and means for automatically and successively increasing the resistance againstthe shuttle-tlnowing movement'ot the piston ro'd.

13. ln a shuttle thrower, the combination with the main cylinder and piston therein having a piston rod adapted to engage a shuttle, o't` means t'or admitting motive fluid to one end ot' said cylinder, means controlled by the movement of the shuttle tor successively decreasing the effective volume of the substitut iallv-tight opposite end ot'l the cylinder, and means t'or maintaining the desired normal pressure within said opposite end ot' the cylinder with the piston inthe main cylinder at the begiuuingot its throwing stroke.

1l. lu a shuttle. thrower, the combination with a main cylinder having a. piston mounted therein and having' a pist/on rod adapted to engage a. shuttle, ot`means for admitting a motive fluid to one end'ot said cylinder, a chamber communicatiug with the opposite' end ot' said cylinder and a piston adjustably mounted in said chamber whereby the etl'ective volume of said oppositie end of the main cylinder may be varied, and means for automatically advancing said adjustable piston step-by-step to successively decrease the ,effecti ve volume thereof.

1'5. In a. shuttle thrower,v the combination l. :with a main cylinder havinga piston mountto one end otsaid cylinder, and means t'orA 'ed therein and having a piston rod adapted to engage a shnttle,'1nea11s for admitting a motive fluid to one end of said cylinder, a chamber communicating with the opposite end of `said cylinder' and a iston adjustably mounted in said chamber W ereby the efeetive volume of said opposite end of the main cylinder may be "aried. means for maintaining the desired pressure in said opposite end of the cylinder and chamber when the parts are in normal position, and means for ,automatically advancing said adjustable piston step-by-step to successively decrease the effee-tive volume thereof.- v

1G. In a shuttle thrower7 the combination In witness whereof, I, have hereunto set my hand and seal at Indianapolis, Indiana. this QQ day of January, A. D. one thousand nine hundred and eight.

VALENTINE Banania. [es] Witnesses XR'TUUR M. Hoon, THOMAS W. Moillnaxs 

